Your opponents do reveal cards until that mana value plus 1 has been found though, so while its not this cards main goal, it is a nice way to see a large portion of your opponents game plan and strategy if you didnt pick up on what exactly the deck was trying to do before
The interplay of evolution and abilities not only adds complexity to the gameplay but also mirrors the essence of the Pokmon franchise, where creatures evolve and showcase unique powers
Kaalia of the Vast can cheat it from your hand (since it's a dragon), Yuna, Hope of Spira can bring it back from your graveyard (since it's an enchantment), and Esper Terra can copy it and trigger most of Bahamut's value by advancing three chapters: Summon: Bahamut isnt legendary, so Esper Terra has no problem copying it
Meanwhile, Garchomp ex, Mewtwo ex, and others Terastallize to change type, as Armarouge ex, Gholdengo ex, and more Pokmon ex join the fray